GPS-88/89 GPS-controlled Frequency Standards

The
GPS-controlled frequency standards are especially suited for use in
calibration departments, providing continuous traceability with no need
for external calibration. The stability/24h is excellent;one part in a
trillion. (Note! The GPS-88 & GPS-89 are available for sale in the
Nordic countries only!) Unlike other GPS-disciplined oscillators
(GPSDO), the disciplining process is not hidden to